fp.

Does HFSS visualize the field in real-time or a user needs to set the geometry/parameters then precalculate the field and only then be able to explore the visualization?

Say, if I wanted to see immediate effects of changing an incidence angle, could I just "scroll" the incidence parameter?

richk449•7mo ago

HFSS does a typical FEM matrix solve then displays the results. It is often used for very complex or large problems, so as far as I know it isn’t set up for instant display of results. That would be a neat feature for small problems.

gjrq•7mo ago

Best one I know of as a direct replacement is AWS PALACE: https://awslabs.github.io/palace/stable/

Of course, you have to interact with the solver through JSON files and provide your own initial mesh. They recently added adaptive refinement but I don't know how well it works. Given what Ansys charges for an HFSS seat though can't complain!

amelius•7mo ago

Wow, is there a Kicad script for generating input for this tool based on a pcb layout? That would be awesome!

mNovak•7mo ago

Relatedly, is there a good open replacement for ADS/Microwave Office? I've seen QUCS/QUCS studio but don't know if there's others out there? Last I looked, the more general SPICE solvers don't support S-param blocks and transmission lines, which are pretty critical.

physicsguy•7mo ago

Depends what you're doing and how maths-y you are since you need to tell it the equations you want to solve, but FEniCs is a very good general purpose FEM code, and you can couple it to Bempp for BEM stuff.

hyperific•7mo ago

*NEC

Tiny C Compiler

SectorC: A C Compiler in 512 bytes

The F Word

Speed up responses with fast mode

Software factories and the agentic moment

OpenCiv3: Open-source, cross-platform reimagining of Civilization III

Hoot: Scheme on WebAssembly

Stories from 25 Years of Software Development

Show HN: Browser based state machine simulator and visualizer

FDA intends to take action against non-FDA-approved GLP-1 drugs

You Are Here

Show HN: A luma dependent chroma compression algorithm (image compression)

First Proof

LLMs as the new high level language

Al Lowe on model trains, funny deaths and working with Disney

Vocal Guide – belt sing without killing yourself

Brookhaven Lab's RHIC concludes 25-year run with final collisions

I write games in C (yes, C) (2016)

Start all of your commands with a comma (2009)

Show HN: I saw this cool navigation reveal, so I made a simple HTML+CSS version

Washington Post CEO Will Lewis Steps Down After Stormy Tenure

Reinforcement Learning from Human Feedback

Selection rather than prediction

The AI boom is causing shortages everywhere else

Microsoft account bugs locked me out of Notepad – Are thin clients ruining PCs?

72M Points of Interest

Coding agents have replaced every framework I used

Unseen Footage of Atari Battlezone Arcade Cabinet Production

A Fresh Look at IBM 3270 Information Display System

France's homegrown open source online office suite